Does polling datasource depend on user logged in?

I have Mango on a windows 7, installed as per instruction and runing in Tomcat. I have registered a datasource (Modbus Serial) and see the data from an end point. However, when I shut down the browser I see that Mango stops polling the datasource. Is this by design?

I need Mango to poll the datasource continously even when there is no browser (user) logged into the system.

Many Thanks.

Data source function and browser viewing are completely different. How are you determining that polling has stopped when you close your browser?